CVE-2021-47740
Published: Dec 31, 2025
Modified: Jan 2, 2026
CVSS v3.1
7.5
Description
KZTech JT3500V 4G LTE CPE 2.0.1 contains a session management vulnerability that allows attackers to reuse old session credentials without proper expiration. Attackers can exploit the weak session handling to maintain unauthorized access and potentially compromise device authentication mechanisms.
| Vendor | Product | Versions |
|---|---|---|
KZ Broadband Technologies, Ltd. | JT3500V | affected 2.0.1B1064affected 2.0.1B1047 |
KZ Broadband Technologies, Ltd. | AM6200M | affected 2.0.0B3210 |
KZ Broadband Technologies, Ltd. | AM6000N | affected 2.0.0B3042 |
KZ Broadband Technologies, Ltd. | AM5000W | affected 2.0.0B3037 |
KZ Broadband Technologies, Ltd. | AM4200M | affected 2.0.0B2996 |
KZ Broadband Technologies, Ltd. | AM4100V | affected 2.0.0B2988 |
KZ Broadband Technologies, Ltd. | AM3500MW | affected 2.0.0B1092 |
KZ Broadband Technologies, Ltd. | AM3410V | affected 2.0.0B1085 |
KZ Broadband Technologies, Ltd. | AM3300V | affected 2.0.0B1060 |
KZ Broadband Technologies, Ltd. | AM3100E | affected 2.0.0B981 |
KZ Broadband Technologies, Ltd. | AM3100V | affected 2.0.0B946 |
KZ Broadband Technologies, Ltd. | AM3000M | affected 2.0.0B21 |
KZ Broadband Technologies, Ltd. | KZ7621U | affected 2.0.0B14 |
KZ Broadband Technologies, Ltd. | KZ3220M | affected 2.0.0B04 |
KZ Broadband Technologies, Ltd. | KZ3120R | affected 2.0.0B01 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now